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I. Basic Information for CVE-2021-21739
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A ZTE's product of the transport network access layer has a security vulnerability. Because the system does not sufficiently verify the data reliability, attackers could replace an authenticated optical module on the equipment with an unauthenticated one, bypassing system authentication and detection, thus affecting signal transmission. This affects: <ZXCTN 6120H><V5.10.00B24>
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
ZTE ZXCTN 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ZTE ZXCTN是中国中兴(ZTE)公司的承载网络接入层的分组传送产品。 ZTE ZXCTN 6120H V5.10.00B24版本存在数据伪造问题漏洞,该漏洞系统对数据可靠性的验证不够充分,攻击者可以用未经认证的光模块替换设备上经过认证的光模块,绕过系统认证检测,从而影响信号传输。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
-<ZXCTN 6120H> <V5.10.00B24> -
II. Public POCs for CVE-2021-21739
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III. Intelligence Information for CVE-2021-21739
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IV. Related Vulnerabilities
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